Pump valve



W'. J. NOTT.

PUMP VALVE.

A'PPLlcATloN vFILED `Aue. 25, 1920.

Patented Feb. 14, 1922.

F l G I- 'FIG UNlTEB STTES PATENT- OFFICE.

PUMP VALVE.

Application led August 25, 1920.

To allie/71cm t may conce ,i

Be it known that l, lViLLrmr latins llorr, a subject ot the King ot Great Britain and ireland, residing at Franklin Terrace, lV est Croydon, State of South A stralia, Commonwealth of Australia, have invented certain new and useful Pump Valves, of which the following is a speciiication.

This invention comprises certain improve ments in pumps for lifting water and other plunger is fitted, immediately below the valve, with two bucket leathers one above .the other each being held in place by aback nut.

ln order 4that my invention may be the more clearly understood l will describe the .same with reference to the accompanying drawings in which--A Fig. l is a vertical central section of a pump barrel showing an external side view of the foot .piece and of the plunger, with their respective valves in place therein.

Fig. 2 is a front view of the plunger and valve.

Fig. 3 is a vertical central section of the plunger and valve on line c ofFig. 2.

Fig. Il is a front view of the foot piece and valve.

Fig. 5 is a vertical central. section of the foot piece and valve on line c (Z of Fig. el.

Fig. 6 is a plan view of the plunger and valve and Fig. 7 is a plan view of the foot piece and valve.

Figs. 8 and 9 are views in elevation of a fishing tool useful in the removal and insertion of the valve.

The barrel il. is made of a length of pipe, preferably of brass. Screwed upon its lower end is a collar i3 which has' a central screwthreaded portion to take the bottom of the foot piece and a bottom screwthreaded portion to take a piece of suction pipe of any required length, not shown` in the drawings. Screwed upon its upper end is a collar C which has an upper screwthreaded portion Specification of Letters Patent.

J' in the centre at the 4top end.

Patented Feb. 14, 1922.

serial No. 405,985.

preferably of somewhat greater diameter whereby it is secured to the bottom end of the delivery pipe which may be made up of any number of pieces to give the requiresL depth, and the upper end of which is secured at the top of the well.

The foot valve l) is carried by a short tubular foot piece E having a screwthreaded bottom end whereby it is held in place as above described and an oblique upperiface or seating F for the valve.

The valve l) consists lof a' flat approXr mately oval shaped metal back having a face ot more or less resilient material such as leather, rubber or softened copper at tached thereto to fit closely upon theV valve seating. rlhe lower end of the valve D is supported and rocks upon a narrow shoulder Cr formed in the foot .piece at the base of the valve seating. To hold it cent-ral relatively to the kvalve Vseating it has a notch ll in the centre at the bottom end and another notch rlhe bottom notch is engaged by a short pin or stud `K projecting from the valve seating at the centre of the shoulder G, and the top notch is engaged by a longer and slightly curved pin or stud L projecting from the upper edge ofthe valve seating across the water spacetowards the opposite side of the barrel.

The rplunger valve M is constructed and controlled in the saine way as the foot valvel D, `the ,plunger N being made in the forni of a tube with two leathers around its lower portion, a screwthreaded socket O at the top for attachment to the pump rod, and an oblique upper face or seating l for the valve M. The valve .is supported and rocks upon a shoulder @L and is maintained in central position relatively to the seating by pins or studs R and S.

The plunger is iitted with two leathers T, each of which is held in place by a back nut V. Each of the leathers T is in the form of a. short cylinder with its two ends slightly bevelled off, the inner edge being cut away at the top and the outer edge out away atthe bottoni. Each of the nuts V has its inside upper edge cut away to form a shallow cup to hold the bottom of the leather. The fittingis as followszmThe bottom portion of the plunger N is reduced somewhat in diameter and is externally screwthreaded for a length approximately equal to the height of the two bucket leathers T and the two nuts V. The upper leather is vfirst placed upon the plunger and moved up to its working position, that is almost to the top of the reduced portion. The upper back nut is then screwed upon the plunger,v its cup-shaped upper edge impinging upon and forcing the bottom portion of the leather into the threads of the plunger and so holding it in place. The second leather is then passed upward over the threaded portion of the plunger until its top edge almost meets the bottom of the upper nut. The second baclr nut is then screwed upon the plunger, its cup-shaped upper edge forcing the bottom portion of the leather into the threads of theplunger and so holding it in position.

The effect of this construction of the valves is that when the valve lifts, the water passes through the valve opening and along the face of the valve practically in a straight line instead of having to take a tortuous passage around the edges of the transverse valves as heretofore. The possibility of chokage by foreign matter is also very much reduced.

My arrangement of the leathers also secures a much better iitting of the plunger within the barrel and practically no escape of water from above the plunger.

A further advantage of my improved foot valve is that it is possible by means of the fishing tool illustrated in Fig. 8 to insert or to remove the foot piece E with its valve without raising the pump barrel from the well. The plunger must of course be first removed. This fishing tool comprises a fork W upon the end of a rod or handle, having a catch X pivoted thereto, with a cord Y whereby the catch X may be operated from the top of the well. To insert the foot piece it is placed in the fishing tool as shown in Fig. 8 and lowered down the barrel and screwed into the collar at the foot of the pump. The lug L of the foot piece is shown in section. When it has been screwed home the catch X is withdrawn from beneath the lug L by means of the cord Y and the fishing tool raised. The plunger is then lowered into place. To remove a foot piece the lishing tool is lowered to the bottom of the barrel until the fork fits upon the top of the lug L of the foot piece, the catch X is allowed to fall under the lug, and the foot piece may then be unscrewed and raised to the surface.

lV here the depth is such as to necessitate the use of a pump rod in sections I prefer to link up the sections by hook and eye joints as shown in Fig. 9 as this obviates the annoyance caused .by the ybreakage of threads.

ln a valve of the class described, the coinbination with a short tubular member hav ing an opening extending through the bottom thereof and a top wall, the body having a recess disposed obliquely at a sharp angle toward said top portion to provide an oblique seat, the lower end of the seat being provided with an upwardly projecting stud and a shoulder, and the top at its under face being provided with a curved studproject-` ing therefrom from the upper edge of the valve seating across the water space toward the opposite side of the barrel, and a valve consisting of a fiat approximately oval shaped metal back having a face of resilient material such as leather, rubber or softened copper attached thereto to fit closely upon the valve seating, said valve having a notch in the center at the bottom engaging the stud and shoulder to hold. the valve centrally relative to the seat-ing and support the valve for rocking movement upon the shoulder, and the top of the valve having a notch engaging the stud at the top to guide the valve in its movement. 4

ln testimony that I claim the foregoing as my invention I have signed my name in the presence of two subscribing witnesses this 2nd day of July 1920.

l/VILLIAM JAMES NOTT. Witnesses ARTHUR Goma CoLLIsoN, STANLEY Roy CHASE. 

